Recently, the charging head network has received a variety of models of the same typeHPChargerIt has a flat design and looks like a power bank when held in the hand. It retains the classic plum blossom interface notebook power supply design and matchesType-CInterface extension cable, the most important thing is its upgrade supportPDthree point one140WFast charging, or a future laptop adapter;Next, let's test together to see how powerful this adapter is.
The adapter body shell is made of frosted+bright surface two-part splicing design, and the shell is made of fireproof PC materials;Float printing on front panel“HP”Brand LOGO.
There is an inscription sticker of product specification parameters on the back.
Model: TPN-LA29;
Input: 100-240V~2.5A 50/60Hz;
Output: 5V3A, 9V3A, 12V5A, 15V5A, 20V5A, 28V5A;
Manufacturer: Guangbao Technology Co., Ltd.
The adapter frosted shell part is connected by the left and right shells, and adopts multi-point buckle and low-pressure seamless ultrasonic technology, which has certain dust-proof and splash proof functions.
The power input interface of the adapter is still a national standard 3-hole plum blossom interface, and the internal metal pins are made of all copper nickel plated material, which has stronger conductivity, wear resistance and scratch resistance.
The connection between the output wire and the body has a concave groove design. It uses the injection molding process in the mold, which is inseparable and more stable. However, the thickened injection shell at the connection is slightly protruding, which cannot stand upright on the table.
The output end is integrated and inseparableType-CThe interface wire, sub end shell and wire body have thickened injection processing, which is more resistant to bending.
Type-CThe terminal is designed with a special PIN pin inside.
ChargerWhen the body is placed on the palm of an adult male, the appearance is similar to a flat charger.
Protocol testing
In addition to the marked fast charging protocol, understanding the complete protocol can facilitate users to select devices according to specific protocols, so as to achieve a better fast charging experience.
Using the POWER-Z KM003C testerType-CThe port supports DCPPD3.1 and other charging protocols.
PDIn terms of O message, five groups of fixed voltage gears (5V3A, 9V3A, 12V5A, 15V5A, 20V5A and 28V5A) and 15-28V 140A AVS supplementary voltage gears (15-28V 140A) are measured.
Product evaluation
Next, let's take a look at the specific use experience of this HP 140W power adapter. The charging head network will give you a comprehensive understanding of this laptop adapter from the aspects of compatibility test, full charge test, standby power consumption test, etc.
Charging compatibility test
It can be clearly known during the compatibility testChargerFor the charging condition of each device, dozens of different models will be measured this time.Now let's see how the USB interface supports fast charging.
Type-C will be supportedPD3.1 The 140W fast charging power bank is connected to the HP 140W power adapter. Use the POWER-Z KM003C tester to read that the input power of the power bank terminal is 27.45V 4.36A 119.77W, and verify its supportPD3.1 Fast charging.
Connect the MacBook Pro laptop to the HP 140W power adapter, and use the POWER-Z KM003C tester to read that the input power of the laptop terminal is 20.1V 4.64A 93.33W.
Summarize the device charging data into a table, and it can be seen that the 5V and 9V voltages of handshakes of different brands have little difference in power;Handset, tablet, laptop and other devices support high-power fast charging equipment, and can shake hands with 15V and 20V voltage gears;For supportablePD 3.1For fast charging equipment, 28V voltage can be grasped.
The histogram shows that HP 140W power adapter is more suitable for high-power products such as laptop computers and handheld computers, and the measured power can reach 119.77W;Occasionally, the mobile phone can be charged in emergency, but the charging power is stable in the range of 10-18W;In general, HP 140W power adapter, as a laptop adapter, has good compatibility with mobile phones, focusing on fast charging of high-power devices such as laptops.
Full charge test
HP 140W power adapter supports maximum power PD 140W charging. In terms of test equipment, the charging head network selected HP and HP 66 laptops as test objects. HP 140W power adapter and HP and HP 66 laptops were placed in a 25 ℃ incubator and powered on. The test results are as follows.
After connecting the power supply, shake hands with the 20V voltage, and the power is stable at about 56-59W in the first 24 minutes;Then the power drops to about 38W and continues to charge for 40 minutes;Then the power decreases in a "curve" and continues until the end of charging. The whole charging process takes about 1 hour and 57 minutes.
The line chart is drawn. It can be seen that the HP 140W power adapter takes 28 minutes to charge 50% of HP's 66 laptops, 56 minutes to charge 80%, and 1 hour and 57 minutes to charge 100%.
No load power consumption test
ChargerIt is a question in many readers' minds whether power will be wasted and how much power will be lost when the socket is not used. The standby power consumption link is to answer this question.takeChargerPlug it into the socket of the Becky power meter, turn off the screen and light, and read the data on the power meter. The test results are as follows.
According to the power meter test, the no-load power consumption of the charger under the voltage of 220V 50Hz is 0.078W, which translates into about 0.68KW · h of electric energy lost in one year. If the market price is 0.6 yuan/KW · h, the annual electric charge of the charger is about 0.4 yuan.
Let's look at the no-load power consumption under 110V 60Hz voltage. The power consumption read by the power meter is 0.042W, which translates into about 0.368KW · h of electric energy lost in one year. If the market price is 0.6 yuan/KW · h, the annual electric charge of the charger is about 0.22 yuan.
Summary
After the above no-load power consumption test, the HP 140W power adapter is not used when it is plugged into a socket under 220V 50Hz voltage, and the electricity consumption is about 0.4 yuan a year;However, in the 110V 60Hz voltage environment, it is not used when it is plugged into the socket, and the electricity consumption is about 0.22 yuan a year.
Conversion efficiency test
In essence, the charger is a conversion device, and there will be losses in the process, which will be emitted in the form of heat;The power drawn by the charger from the socket is often larger than the power marked by the charger;The HP 140W power adapter is tested for conversion efficiency under 220V 50Hz and 110V 60Hz AC input respectively. The following figure shows the test results.
First, let's see how the conversion efficiency is under 220V 50Hz voltage. The overall conversion efficiency is between 84.46-93.51%;The highest conversion efficiency is 28V5A gear, and the conversion efficiency reaches 93.51%;The lowest conversion efficiency is 12V5A gear, and the conversion efficiency is 84.46%.
Then take a look at the conversion efficiency under 110V 60Hz voltage. The overall conversion efficiency is between 85.64-92.9%;The highest conversion efficiency is 28V5A gear, and the conversion efficiency reaches 92.9%;The lowest conversion efficiency is 12V5A gear, and the conversion efficiency is 85.64%.
On the whole, the conversion efficiency of HP 140W power adapter under two types of voltage is excellent among similar chargers.
Ripple test
Since switching power supply is used in the charger, the secondary output of the transformer is not DC, which needs to be output through rectification and capacitor filtering, that is, the output of the charger will have ripple;The charging head network uses an oscilloscope to test the ripple value of the charger output, compare it with the industry standard, and test the output quality of the charger.The lower the ripple, the higher the output quality of the charger.
No-load ripple
First, look at the no-load ripple under the voltage of 220V 50Hz. The highest peak and peak of ripple is 5V0A, and the peak and peak of ripple is 122mVp-p;The lowest peak value of ripple is 28V0A, and the peak value of ripple is 52mVp-p.
Then let's see how the no-load ripple behaves under 110V 60Hz voltage. The highest peak and peak value of ripple is 9V0A gear, and the peak and peak value of ripple is 58mVp-p;The gear with the lowest ripple peak value is 5V0A, and the ripple peak value is 44mVp-p.
Load ripple
First, take a look at the load ripple under the voltage of 220V 50Hz. The highest peak and peak value of the ripple is 28V5A gear, and the peak and peak value of the ripple is 188mVp-p;The lowest peak value of ripple is 9V3A gear, and the peak value of ripple is 92mVp-p.
Then let's look at the performance of the load ripple under 110V 60Hz voltage. The highest peak and peak of the ripple is 28V5A gear, and the peak and peak of the ripple is 178mVp-p;The gear with the lowest ripple peak value is 5V3A, and the ripple peak value is 64mVp-p.
Summary
In YD/T 1591-2009 communication industry standard, the ripple requirement of the charger is not higher than 200mVp-p. Under the input voltage of 220V 50Hz and 110V 60Hz, the maximum ripple peak value of the output power of the HP 140W power adapter is 188mVp-p, which meets the industry standard that the ripple is not higher than 200mVp-p.
Temperature test
The charger is a kind of conversion equipment. There will be losses during the charging process, which will be emitted in the form of heat, so the charger will generate heat.HP 140W power adapter supports up to 28V 5A 140W output. Place the charger in a 25 ℃ incubator and collect the temperature of the charger surface after one hour of 28V5A load.
First, let's see how the temperature of the charger behaves under the 220V 50Hz voltage output.
One hour later, the surface temperature of the charger photographed by the thermal imager was 62.4 ℃.
Let's see how the temperature behaves at 110V 60Hz.
One hour later, the maximum temperature of the charger surface photographed by the thermal imager is 65.2 ℃.
Summarize the temperature data into a table. The maximum temperature is 62.4 ℃ at 220V 50Hz and 65.2 ℃ at 110V 60Hz.
Plotting the data into a column chart, it can be seen that the maximum temperature of HP 140W power adapter when outputting at 220V 50Hz and 110V 60Hz is 65.2 ℃, and the maximum temperature during load test meets the requirements of IEC International Electrotechnical Commission IEC62368 and the new national standard GB4943.1 2022 for testing electronic and electrical equipment, and the temperature is not higher than 77 ℃.
Summary of charging head network
The HP 140W power adapter continues the classic design of the old notebook power output and input terminals in appearance. The Type-C output interface design can adapt to most intelligent devices on the market, making the body more thin and slender;The adapter is made of all copper nickel plated plum blossom interface, and also supports 100-240V broadband voltage power supply input. It is also fearless for international travel.
In terms of performance, Type-C interface supports PD3.1 140W fast charging, which actually provides good fast charging support for mobile phones, tablets and laptops;Under 110V 60Hz and 220V 50Hz mains power, it has standby power consumption less than 0.078W, conversion efficiency between 84% and 94%, and 28V5A gear is up to 93.51%.
Under the 220 V 50Hz AC input load, the ripple value is lower than 190mVp-p except that the 28V5A gear is too high, and the output ripple difference of other gears is relatively average, indicating that the output of this charger is stable, and the temperature benefits from the flat and slender body design. With the PD 28V5A 140W power, the output temperature is about 65.2 ℃ at 25 ℃ for one hour,It will be further reduced in daily use.
On the whole, HP 140W power adapter adopts the integrated Type-C fast charging line design, and its conversion efficiency, power output quality, temperature control and other aspects are among the first echelon of similar products. For users, the flat body is more convenient to store than the "brick" adapter.